<?php

namespace app\admin\controller;

use app\common\controller\Backend;
use think\Db;
use PDOException;


/**
 * 视频课章节
 *
 * @icon fa fa-circle-o
 */
class Videochapter extends Backend
{

    /**
     * Videochapter模型对象
     * @var \app\admin\model\Videochapter
     */
    protected $model = null;

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\Videochapter;

    }


     public function index()
    {
        //设置过滤方法
        $this->request->filter(['strip_tags', 'trim']);
        if ($this->request->isAjax()) {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('keyField')) {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
            $list = $this->model
                ->where($where)
                ->order($sort, $order)
                ->paginate($limit);
            foreach ($list as $k => $v) {
                # 课程名称
                $list[$k]['video_chapter_name'] = Db::name('video')->where('id', $v['video_id'])->value('name');
            }
            $result = array("total" => $list->total(), "rows" => $list->items());
            return json($result);
        }
        return $this->view->fetch();
    }



    public function add()
    {
        if (false === $this->request->isPost()) {
            return $this->view->fetch();
        }
        $params = $this->request->post('row/a');
        if (empty($params)) {
            $this->error(__('Parameter %s can not be empty', ''));
        }
        $params = $this->preExcludeFields($params);

        if ($this->dataLimit && $this->dataLimitFieldAutoFill) {
            $params[$this->dataLimitField] = $this->auth->id;
        }
        $filePath = ROOT_PATH . '/public' . $params['url'];
        $duration = 0;
        # 获取音频视频时长
        $getID3 = new \getID3();
        $duration = $getID3->analyze($filePath)['playtime_seconds'] ?? 0;
        # 视频 音频 秒
        $params['duration'] = round($duration,3);
        # 附件类型
        $params['mimetype'] = mime_content_type($filePath);
        # 获取文件大小
        $fileSizeBytes = filesize($filePath);
        $fileSizeFormatted = $this->formatSizeUnits($fileSizeBytes);
        $params['filesize'] = $fileSizeFormatted;
        $result = false;
        Db::startTrans();
        try {
            //是否采用模型验证
            if ($this->modelValidate) {
                $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.add' : $name) : $this->modelValidate;
                $this->model->validateFailException()->validate($validate);
            }
            $result = $this->model->allowField(true)->save($params);
            Db::commit();
        } catch (ValidateException|PDOException|Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        if ($result === false) {
            $this->error(__('No rows were inserted'));
        }
        $this->success();
    }



    public function edit($ids = null)
    {
        $row = $this->model->get($ids);
        if (!$row) {
            $this->error(__('No Results were found'));
        }
        $adminIds = $this->getDataLimitAdminIds();
        if (is_array($adminIds) && !in_array($row[$this->dataLimitField], $adminIds)) {
            $this->error(__('You have no permission'));
        }
        if (false === $this->request->isPost()) {
            $this->view->assign('row', $row);
            return $this->view->fetch();
        }
        $params = $this->request->post('row/a');
        if (empty($params)) {
            $this->error(__('Parameter %s can not be empty', ''));
        }
        $params = $this->preExcludeFields($params);
        $filePath = ROOT_PATH . '/public' . $params['url'];
        $duration = 0;
        # 获取音频视频时长
        $getID3 = new \getID3();
        $duration = $getID3->analyze($filePath)['playtime_seconds'] ?? 0;
        # 视频 音频 秒
        $params['duration'] = round($duration,3);
        # 附件类型
        $params['mimetype'] = mime_content_type($filePath);
        # 获取文件大小
        $fileSizeBytes = filesize($filePath);
        $fileSizeFormatted = $this->formatSizeUnits($fileSizeBytes);
        $params['filesize'] = $fileSizeFormatted;
        $result = false;
        Db::startTrans();
        try {
            //是否采用模型验证
            if ($this->modelValidate) {
                $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.edit' : $name) : $this->modelValidate;
                $row->validateFailException()->validate($validate);
            }
            $result = $row->allowField(true)->save($params);
            Db::commit();
        } catch (ValidateException|PDOException|Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        if (false === $result) {
            $this->error(__('No rows were updated'));
        }
        $this->success();
    }





    // 转换为更友好的单位（如 KB/MB/GB）
    function formatSizeUnits($bytes) {
        if ($bytes >= 1073741824) {
            $bytes = number_format($bytes / 1073741824, 2) . 'GB';
        } elseif ($bytes >= 1048576) {
            $bytes = number_format($bytes / 1048576, 2) . 'MB';
        } elseif ($bytes >= 1024) {
            $bytes = number_format($bytes / 1024, 2) . 'KB';
        } else {
            $bytes = $bytes . ' Bytes';
        }
        return $bytes;
    }



}
